148
The wiring for the power line and signal line of valve box
Graphical representation for wiring
The wiring for the power line of valve box, the wiring for the signal line between valve boxes and outdoor units as
well as the wiring between valve boxes.
Items
Total
Current
of valve
boxes
(
A)
Cross
Section
(
mm
2
)
Rated
Current of
Overflow
Breaker (A)
Rated Current of Power Leakage
Breaker (A)
Leaking Current (mA)
Operating Period (S)
Cross Sectional Area of Signal Line
Outdoor-valve
box (mm
2
)
Valve box- valve
box (mm
2
)
<15
2.5
15
15A, 30mA, 0.1S or below
2cores ×0.75-2.0 mm
2
shielded line
• Power cable and communication wire must be fixed firmly.
•
Each valve box must be earthed well.
• When power cable exceeds the range, thicken it appropriately.
•
Shielded layer of communication wires must be connected together and be earthed at single
point.
•
Communication wire total length cannot exceed 1000m.
Connect the communication terminal block P and Q of the main unit of the outdoor units with the communication
terminal block P and Q of the first valve box (VP 1).
Notes:
(1) The above wiring example is only for reference. The number of valve boxs and indoor units
shall be subject to the field installation.
(2) Communication line from cooling-only indoor unit may be connected to the communication
terminal block P and Q (outdoor) of the valve box.
PQ BC
L N
L N
P Q ABC
A B C
C1 C2
P1Q1P2Q2P3Q3P4Q4
PQ AB C
AB C
PQ ABC
AB C
PQ AB C
A B C
PQ AB C
A B C
L N
PQ AB C
PQ ABC
Indoor 9
AB C
wired
controller
wired
controller
A B C
Outdoor 1
Indoor 1
wired
controller
wired
controller
Indoor 2
VP 1
P QA BC
Outdoor 2
Outdoor 3
VP4-560B
VP 3
Indoor 1-4
Indoor 8
To power supply
1PH,220-230V~,
50/60Hz
Rated Current
of Overflow
Breaker
Outdoor Indoor
communication wire with polarity
The communication wire of valve boxes and
outdoor units as well as between valve boxes with
non-polar.
Cooling and Heating are Optional Indoors
Just Cooling Indoors
A BC
A BC
B
P QA BC
P QA BC
A BC
ABC
Outdoor
Outdoor Indoor
P Q BC
Indoor 4
Indoor 3
Indoor 6
Indoor 5
wired
controller
wired
controller
wired
controller
wired
controller
Indoor 7
wired
controller
Summary of Contents for MRV 5-RC VP1-112B
Page 1: ...MRV 5 RC Service Manual SYJS 03 2019REV A Edition 2019 03 ...
Page 3: ......
Page 55: ...52 AV08 10 12 14IMVURA 4 Center of gravity x X 347 9587 y 471 5454 z 725 6683 y z ...
Page 56: ...53 AV16 18 20 22IMVURA x X 650 5962 y 380 7255 z 706 5342 y z ...
Page 106: ...103 2 Dimension 4 19 200 60 25 25 25 249 108 232 84 69 388 73 82 65 103 177 4 44 4 35 277 ...
Page 116: ...113 2 Preparation before installation ...
Page 162: ...159 One by one valve box PCB code 0151800186A 2 Valve box PCB photo and dip switch setting ...
Page 165: ...162 One by four valve box PCB code 0151800466 ...